Wika 4253132 Pressure Gauge 0-100 Psi 2.5 in Dial Npt

Product Description

The WIKA 4253132 is an analog pressure gauge designed for general-purpose monitoring in plumbing, HVAC, and industrial service applications. It features a 2.5-inch dial with a 0 to 100 psi pressure range, a lower-mount 1/4-inch NPT connection, and an ABS case with brass wetted parts. Accuracy is rated at 3-2-3 percent of scale, meaning the middle portion of the scale reads tighter than the ends. The no-fill design keeps the internals dry, making it straightforward to handle and install. Licensed plumbers, HVAC technicians, and mechanical contractors commonly install this gauge on pressure lines, test ports, and system monitoring points.

This gauge fits residential and light commercial service work where a compact, easy-to-read analog dial is needed at a pressure tap or service port. The lower-mount connection orients the dial face upward when the gauge is threaded into a bottom-entry fitting, which is a common configuration on manifolds, boiler taps, and pump discharge ports. The 2.5-inch dial size is large enough for quick visual checks without requiring a bulkier gauge body.

Key Features

• 0 to 100 psi pressure range with analog dial readout
• 3-2-3 percent of scale accuracy across the full range
• Lower-mount 1/4-inch NPT connection for bottom-entry installations
• ABS case provides lightweight, corrosion-resistant housing
• Brass wetted parts for compatibility with water, air, and common HVAC fluids
• No-fill design — dry gauge, no liquid dampening required

Compatibility

Designed as an OEM-style replacement or direct-install pressure gauge for residential and light commercial plumbing, HVAC, and mechanical systems using 1/4-inch NPT lower-mount gauge ports.

Installation Notes

Installation is typically performed by a licensed plumber or HVAC technician. Depressurize and isolate the system fully before removing or installing any pressure gauge. Apply thread sealant tape or approved pipe thread compound to the NPT threads before installation — do not overtighten, as ABS-cased gauges can crack if excessive torque is applied to the case. Verify the system pressure range does not exceed the gauge maximum before returning the system to service.